Use of Interp to Interpret Data from a Table

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Mohammed Raslan
Mohammed Raslan 2023-7-29
评论： Mohammed Raslan 2023-7-31
Hi,
I have a simple table (in the form of 2D array) in which I would like to setup as a function, i.e., @(x), to extract data from by interpolation.
For example:
a = [1 2; 2 3; 3 4]; % This is my table data
I want to be able to say fn(2) and would get the value of that by interpolating from the data in 'a.'
So what I would do is the following:
fn = @(x)interp(a(:,1),a(:,2),x); % Define my function
So 'fn' now is a function that represents the data in the array where its to be evaluated at 'x.' The function to output the value of the function from a(:,2).
The above setup is done in MATLAB but it gives the following error:
"Expected r to be integer-valued."
"validateattributes(r,{'numeric'},{'>=',1,'finite','integer','scalar'},'interp','r');"
How so? I appreciate your help.
Note: I already installed "Signal processing toolbox."

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回答（1 个）

Voss
Voss 2023-7-30
Use interp1 instead of interp.

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